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Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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BWXT will scout potential TRISO fuel production sites in Wyoming
BWX Technologies Inc. announced today that its Advanced Technologies subsidiary has signed a cooperation agreement with the state of Wyoming to evaluate locations and requirements for siting a potential new TRISO nuclear fuel fabrication facility in the state.
J. Jedruch, R. J. Nodvik
Nuclear Technology | Volume 3 | Number 8 | August 1967 | Pages 507-518
Technical Paper and Note | doi.org/10.13182/NT67-A27783
Articles are hosted by Taylor and Francis Online.
The determination of the isotopic composition and the fission-product inventories of a spent reactor core is demonstrated through the proper selection of sampling points and analytical treatment of data using Core I of the Yankee reactor as an example. This core is found to contain 172 kg of 235U less than initially loaded, plus 97.0 kg of freshly generated Pu. Mass balances of U and Pu isotopes and the fission products are used to demonstrate the various possible ways of defining the end-of-life conversion ratio, with the preferred definition giving a value of 0.50 for the Yankee core. Methods of determining the total burnup from U and Pu concentrations, from 137Cs activity, and from plant calorimetrics are discussed and applied to the Yankee data and give 8.40 ± 0.21 GWD/MTU for the core average burnup.